Re: Explain the Law of conservation of matter and energy


<surrealistic-dream@xxxxxxxxxxx> wrote in message
news:1135948087.367419.264290@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> Bill Hobba wrote:
>> <surrealistic-dream@xxxxxxxxxxx> wrote in message
>> news:1135868798.093821.106940@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >
>> > Bill Hobba wrote:
>> >> "LameDuck" <Drifta12@xxxxxxxxx> wrote in message
>> >> news:1135824448.376782.19170@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >> > Can you give me an outline of how I should order it my essay. Like
>> >> > what
>> >> > I should talk about first and what I should talk about last
>> >> >
>> >> > Also can you give me something easier that a high school sophmore
>> >> > might
>> >> > understand.
>> >> >
>> >> > But thanx for your reply.
>> >>
>> >> Check out
>> >> http://www.newton.dep.anl.gov/askasci/phy00/phy00968.htm
>> >>
>> >> Post your email address and I can send you a paper explaining it in
>> >> the
>> >> context of the other conservation laws such a conservation of
>> >> momentum.
>> >> Basically conservation of energy is a tautological statement about a
>> >> systems
>> >> time symmetry.
>> >
>> > Bill, are you saying that the law of conservation of energy has no
>> > physical content?
>>
>> No - its physical content lies in the fact for a reason we do not
>> understand
>> yet all fundamental theories are expressible as a PLA or if you use QM as
>> a
>> starting point the existence of gauge transformations. That is the very
>> important discovery of Noether which basically says symmetries in the
>> lagrangain is the same as conservation laws and conversely. For example
>> a
>> mathematical analysis of EM shows it is based on gauge symmetry of its
>> lagrangain. The theorem implies that is equivalent to a conservation
>> law -
>> in this case it is conservation of charge. Thus at rock bottom EM is a
>> theory about charge conservation. I have a paper explaining all this if
>> you
>> post your email I can send it to you. It basically expands on the
>> following:
>> http://www.colorado.edu/philosophy/vstenger/nothing.html
>
> In the power point presentation in the link you gave it says:
> "Electromagnetic and nuclear forces are fictions introduced to preserve
> local gauge invariance." Do you agree with this claim of the fictitious
> nature of these forces?

Yes - under the contextual meaning of fictitious here - which means it is
logically equivalent to a symmetry. In saying EM forces for example result
from gauge symmetry what it is saying is that assuming gauge symmetry
results in EM forces - not that those forces do not actually exist. This
view turns symmetry on its head - we do not say forces exist in theories
that have this magical symmetry - we say this magical symmetry exists hence
forces occur.
http://www.upscale.utoronto.ca/GeneralInterest/DBailey/SubAtomic/Lectures/LectF13/Lect13.htm
'Requiring local U(1) gauge invariance requires that the particle interact
with a field. In this case all of electromagnetism can be summed up by
saying there is a local U(1) gauge invariance of the universe.'

> If so, how do you operationally define a force?

The same as always.

Bill


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